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Anomalous Solvatochromic Effect. Comparison Between Decyl and ω‐Hydroxydecyl 3‐Substituted Polythiophenes
Author(s) -
Lanzi Massimiliano,
DellaCasa Carlo,
CostaBizzarri Paolo,
Bertinelli Franco
Publication year - 2001
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20010601)202:9<1917::aid-macp1917>3.0.co;2-x
Subject(s) - solvatochromism , substituent , chloroform , methanol , chemistry , solvent , polymer chemistry , solvent effects , copolymer , solvent polarity , polymer , organic chemistry , photochemistry
The solvatochromic behavior of chloroform solutions of poly(3‐decyl‐2,5‐thienylene), poly[3‐(10‐hydroxydecyl)‐2,5‐thienylene] and their copolymers was studied by the addition of the non‐solvent methanol. A reversed chromic transformation was found associated with the content of the hydroxyalkyl substituent. This anomalous effect was investigated using a number of non‐solvents, in particular aliphatic alcohols from methanol up to decanol. In the case of a chloroform/methanol mixture, which gives the maximum anomalous effect, the effect produced by temperature variation was also examined. An explanation based on a molecular approach was attempted.